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Probability distribution of atom-atom distances (Å) of Asn as a function of χ1 for the four backbone conformations of (Ala)4-Asn-(Ala)4 with the C22/CMAP force field and from a survey of the PDB. Distances between A) side-chain oxygen of Asn and nitrogen of backbone and B) between side-chain oxygen of Asn and oxygen of backbone are shown.
